(来学网)四层螺旋CT扫描采用4×2.5探测器准直宽度10mm,则扫描1周的层厚是
  • A.
    (来学网)40mm
  • B.
    (来学网)20mm
  • C.
    (来学网)10mm
  • D.
    (来学网)5mm
  • E.
    (来学网)2.5mm